#include <Eigen/Core>
#include <iostream>
#include <random>

using namespace Eigen;

int
main()
{
	std::default_random_engine generator;
	std::poisson_distribution<int> distribution(4.1);
	auto poisson = [&]() { return distribution(generator); };

	RowVectorXi v = RowVectorXi::NullaryExpr(10, poisson);
	std::cout << v << "\n";
}
